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Gen 3 v8 Lifter Bank Angle? |
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amx600rr 
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 Topic: Gen 3 v8 Lifter Bank Angle?Posted: Mar/04/2021 at 1:47pm |
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Talking to a Machinist about installing lifter bore sleeves. He is asking what the Gen 3 401 lifter bank angle is. Any builders know this spec? Thanks.
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Ken_Parkman
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Posted: Mar/04/2021 at 5:36pm |
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They are 45 degrees, parallel to the cylinder bores
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amx600rr
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Posted: Mar/04/2021 at 7:30pm |
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Thank You Sir.
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Steve_P
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Posted: Mar/05/2021 at 8:58am |
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Does any 90* engine not have the lifter bores at 90*?
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Trader
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Posted: Mar/05/2021 at 10:31am |
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https://www.enginebuildermag.com/2009/04/chrysler-a-block-lifter-bank-angles/
Sounds like you have a diligent machinist.
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Hurst390
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Posted: Mar/05/2021 at 11:52am |
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SC/Hurst Rambler
11.62 120 100% Street Legal |
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Hurst390
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Posted: Mar/05/2021 at 11:54am |
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SC/Hurst Rambler
11.62 120 100% Street Legal |
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Ken_Parkman
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Posted: Mar/05/2021 at 12:27pm |
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Remember first time I saw that on the SBM, just shocked how stupid it looked. Years later learned it was a result of the weird valve angle combinations Chrysler was messing with in the 50's like the original A engine that had the intake rocker reversed and the older hemi stuff.
Some engines even have a different angle intake to exhaust.
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6PakBee
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Posted: Mar/05/2021 at 1:19pm |
Yup. When the A series smallblock was introduced in '56 it was based on the first generation Hemi block that required that weird lifter bore angle. Why Mopar never changed it is a mystery as it survived through the LA's and Magnum engines even though by then it wasn't needed.
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Roger Gazur
1969 'B' Scheme SC/Rambler 1970 RWB 4-spd Machine 1970 Sonic Silver auto AMX All project cars. "Shotgunning works great for pheasants, not so great for electrical problems" |
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farna
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Posted: Mar/08/2021 at 6:54am |
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As long as the lifter itself is perpendicular to the camshaft the lifter bore angle really doesn't matter. It will affect the rest of the rocker/pushrod geometry of course, but as long as that is correct there technically shouldn't be a problem -- at least not for a stock engine. High rpm operation (sustained over 4000 rpm) might make more of a difference though. The wider the angle the more room you have to put things, of course.
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Frank Swygert
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Steve_P wrote: